ViewRay magnetic resonance (MR) guided radiotherapy system not only solves the problem of imaging dose,but also can set up accurately,online adaptive radiotherapy and gated irradiation according to magnetic resonance imaging (MRI).The development of this system provides a new technical means of accurate radiotherapy.This review describes the main structure of the ViewRay system,and summarizes quality assurance (QA),dosimetric comparison,respiratory motion management,online adaptive radiotherapy,and preliminary treatment effect.

Objective To understand the factors that affect the pulmonary rehabilitation behavior of elderly patients with lung cancer during the post-operative transitional period,and provide reference bases for formulating the pulmonary rehabilitation plan of elderly patients with lung cancer during the transitional period and improving the compliance of pulmonary rehabilitation.Methods Based on the capability,opportunity,and motivation-behavior model(COM-B model),12 elderly lung cancer patients who underwent surgery at a tertiary A tumor hospital in Tianjin from March to July 2022 were selected for semi-structured interviews using descriptive research methods and purposive sampling method.The data were analyzed using directed content analysis.Results The ability factors(physical strength and postoperative discomfort symptoms of the elderly limit lung rehabilitation exercise,lack of pulmonary rehabilitation knowledge and awareness of the importance of exercise in lung rehabilitation knowledge),opportunity factors(lack of grassroots medical and health services,limiting lung rehabilitation exercise;family and friends are important resources for promoting lung rehabilitation exercise;medical support is a guarantee for promoting lung rehabilitation exercise),motivational factors(high self-efficacy in exercise is the foundation for lung rehabilitation exercise,perception of lung rehabilitation effects increases motivation for lung rehabilitation exercise)and 7 sub themes were extracted.Conclusion There are certain obstacles and promoting factors in the transitional lung rehabilitation process for elderly lung cancer patients after surgery.It is necessary to improve their postoperative discomfort symptoms,increase their knowledge of lung rehabilitation,enhance their awareness of lung rehabilitation,face the social support role of family,friends,and medical staff,improve the infrastructure and lung rehabilitation system,increase community lung rehabilitation support,provide multi-channel high-quality lung rehabilitation resources,and promote the development of smart medical services,constructing a transitional lung rehabilitation strategy for elderly patients with lung cancer.

Objective: To construct and implement a calculation model of clinical nursing post classification. Methods: Between October to December 2018, head nurses of the hospital were screened as consultants, and Delphi method was used to determine the indicators, while the weights were assigned from the aspects of nursing workload, work quality, patient satisfaction and number of nursing night shifts. Combined with HIS data, the calculation model of clinical nursing post classification was constructed to classify clinical nursing units into different categories and levels. Results: After two rounds of expert enquiry, 82 nursing work items were identified and the objective weight assignment was determined ranging from 0.80 to16.14. According to the established calculation model and HIS data, nursing posts in clinical departments were classified into 6 levels and 3 categories, and the accurate management of clinical nursing post classification was achieved. Conclusions The construction of a calculation model is scientific and rigorous, which provides a scientific basis for dynamic nurse performance management and rational allocation of human resources. In addition, it provides a useful reference for accurate nursing management.